Just weeks after a key Supreme Court ruling on political fundraising, the cash marathon has begun to the Bay Area — with a crowd of Democratic Senators hitting Silicon Valley to pick up campaign checks.

With spring break over and a Senate recess on, the Bay Area’s political ATM, crowned by Silicon Valley, has this week attracted U.S. Senators Mark Begich of Alaska, Mark Udall of Colorado, Jeanne Shaheen of New Hampshire, Mark Warner of Virginia, Cory Booker of New Jersey, Ed Markey of Massachusetts and Kirsten Gillibrand of New York.

Also rumored to be in town — or headed this way — are Sherrod Brown of Ohio, Chuck Schumer of New York, and Democratic National Committee chair Debbie Wasserman Schultz of Florida, along with Senate Majority Leader Harry Reid of Nevada.

The justices, earlier in April, ruled limits on the total amount of money donors can give to all candidates, committees and political parties to be unconstitutional. So while the limit remains on the amount a wealthy Silicon Valley donor might give to each individual candidate — it’s still $2,600 per election — now those lucky donors are freed up to give to an unlimited number of candidates.

Which means that means Congressional campaigns are free to put on even more pressure for checks.

It comes as the April pilgrimage to the Bay Area for cash is becoming just about as predictable as “the cherry blossoms blooming in Washington DC,” says one Democratic insider who knows the turf well. “With the Senate out of session this week, many marquee incumbents up for reelection this fall are hosting multiple fundraising events in both San Francisco and in Silicon Valley”.

Speaking not for attribution, the Democratic activist said that the crush of Democratic politicians here has not only created some political traffic jams — but also some challenges as the elected officials seek attention of the most generous, and increasingly-overwhelmed, political donors in the Valley.

And by not spacing out the trips, they may be getting less than they otherwise would, the insider says.

“I understand why it happens and I fully support the trips, it’s just having them all here in the same week is not as efficient as it might otherwise,” the Democrat told us, “since they’re competing against each other for many of the same donors.”

“Each campaign is responsible for achieving their own financial goals, but I believe better coordination and communications at the top might increase each campaign’s yield and the overall pie in the aggregate.”

In other words: less is more. But we’re talking fundraising here, so who’s listening?